Enjoy a new perspective of the Trevi Fountain with this Trevi Fountain underground tour. Explore the history of the fountain, explore the passages underneath it, and see the ancient Roman aqueduct that lies beneath the fountain. See the famous Trevi Fountain, and learn more about the underground passages stretching out under the Trevi Fountain, where the remains of of an ancient aqueduct are visible. Explore “Vicus Caprarius – the City of Water”, an impressive archaeological area located underground beneath the Trevi Fountain. Admire the remains of one of the 11 aqueducts built by the Romans, whose poetic name, Aqua Virgo, means “pure water”, referring to the purity and clarity of the water. archaeological site. Enjoy one of the best underground sites of Rome, where the water, still flowing fresh and clear today, laps at the ancient Roman remains serving as a relaxing soundtrack to this unique Trevi Underground walk.